OT-4 pipe
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| OT4 | Delivery from the stock, in stock | ||||
| OT4-0 | Delivery from the stock, in stock | ||||
| OT4-1 | Delivery from the stock, in stock |
Production
Titanium alloys are classified by crystal lattice configuration: α-lattice - in the form of a hexahedron), β - in the form of a cube, α+β - mixed state. Alloys OT-4, OT4-0 and OT4-1 are pseudo α-alloys. These alloys are not thermally hardened and are divided into two groups: 1) low-strength high-tech and 2) high-strength super α-alloys. The former contain a small percentage of aluminum and small concentrations of β-stabilizers, which allows high processability close to that of pure titanium. These alloys are well welded by all kinds of welding.
| Alloy | Aluminum | Manganese | Al equivalent in % | Mo equivalent in % |
|---|---|---|---|---|
| OT4-0 | 0,8 | 0,8 | 1,8 | 1,3 |
| OT4-1 | 0,5 | 1 | 2,5 | 1,7 |
| OT-4 | 4 | 1,5 | 5,0 | 2,5 |
| Alloy | Specific weight | melting point t°. | Properties | Technology | Application |
|---|---|---|---|---|---|
| OT4-0 | 4.51 g/cm³ | 860-930° | Low strength and high processability. Manganese increases processability in hot work pressure applications | Easy to deform hot and cold, can be forged at room temperature and welds well. | High technology cold forming parts. |
| OT4-1 | 4.55 g/cm³ | 910-950° | Medium strength and high workability | Easily deformed hot and cold, well welded by all types of welding. | This material is used for trim and jacket material and for thin-walled complicated shapes. |
| OT4 | 4.55 g/cm³ | 920-960° | Medium strength. Higher Al content increases strength but reduces processability. | Easily deforms in hot state and limited in cold state. Forging is possible with heating. Good weldability. | Structural and cladding material, forgings, parts of aircrafts and gas-turbine engines working continuously up to 400°. |
Semifinished products are made of OT-4, OT4-0 and OT4-1 alloys such as sheets, strips, bars, forgings, forgings. Tubes and wires are predominantly made of OT4-0, OT4-1. Also made of OT4 are panels, hollow profiles and ring parts.
| OCT4-0 tubes | Thickness (mm) | Heat treatment | Strength (MPa) | Plasticity δ% | KCU J/cm³ |
|---|---|---|---|---|---|
| Hot pressed | Annealed | 430 - 650 | Over 12% | --- | --- |
| Seamless | 1 - 4 | Annealed | 490 - 637 | More than 15% | --- |
| Seamless | 0,5 - 2,0 | Annealed | 490 - 637 | More than 18% | --- |
| Welded | 1,5 - 2,0 | Annealed | 490 - 637 | Over 15% | --- |
| OT4-0 tubes | Heat treatment | Strength (MPa) | ductility δ% | KCU J/cm³ |
|---|---|---|---|---|
| Hot-deformed | Annealed | 530 - 750 | More than 10% | --- |
| Hot-rolled | Annealed | 600 - 750 | More than 10% | --- |
| Cold-formed | Annealed | 600 - 750 | More than 12% | --- |
Disadvantages
OT alloys have a relatively low strength and a high tendency for hydrogen embrittlement.
Applications
High structural efficiency - corrosion and erosion resistance, ballistic resistance and a number of other advantages of OT-4, OT4-0, OT4-1 grades determine the appropriateness of theirThe use of these alloys in production of systems of transport nuclear power units, ship heat exchangers, pumps, ship piping and exhaust flue systems, catapult water brakes, blast stream deflectors, vertical descent systems and other similar parts. Pipes made of these alloys are indispensable in the nuclear power and chemical industries.
Buy at a bargain price
Evek GmbH stocks a wide range of titanium rolled products. We sell products of titanium grades OT-4, OT4-0 and OT4-1 at the best prices. Quality is guaranteed by strict observance of standards and production technology. Products pass ultrasonic inspection for absence of defects. Experienced managers give comprehensive advice on all questions. Delivery - in the shortest possible time. Flexible system of discounts in case of bulk orders. A flexible discount system is available for bulk orders.